package tim.prune.load;
-import java.awt.BorderLayout;
-import java.awt.CardLayout;
-import java.awt.Component;
-import java.awt.Dimension;
-import java.awt.FlowLayout;
-import java.awt.GridLayout;
-import java.awt.event.ActionEvent;
-import java.awt.event.ActionListener;
-import javax.swing.*;
-import javax.swing.event.DocumentEvent;
-import javax.swing.event.DocumentListener;
-import javax.swing.event.ListSelectionEvent;
-import javax.swing.event.ListSelectionListener;
-import javax.swing.table.TableCellEditor;
-
import java.io.File;
+import javax.swing.JFileChooser;
+import javax.swing.JFrame;
+import javax.swing.JOptionPane;
+
import tim.prune.App;
import tim.prune.I18nManager;
-import tim.prune.data.Altitude;
-import tim.prune.data.Field;
+import tim.prune.load.xml.XmlFileLoader;
/**
- * Special class to handle file loading including GUI options,
- * and conversion to a Track object
+ * Generic FileLoader class to select a file
+ * and pass handling on to appropriate loader
*/
public class FileLoader
{
- private File _file = null;
- private App _app = null;
- private JFrame _parentFrame = null;
- private JDialog _dialog = null;
- private JPanel _cardPanel = null;
- private CardLayout _layout = null;
- private JButton _backButton = null, _nextButton = null;
- private JButton _finishButton = null;
- private JButton _moveUpButton = null, _moveDownButton = null;
- private JRadioButton[] _delimiterRadios = null;
- private JTextField _otherDelimiterText = null;
- private JLabel _statusLabel = null;
- private DelimiterInfo[] _delimiterInfos = null;
private JFileChooser _fileChooser = null;
- private FileCacher _fileCacher = null;
- private JList _snippetBox = null;
- private FileExtractTableModel _fileExtractTableModel = null;
- private JTable _fieldTable;
- private FieldSelectionTableModel _fieldTableModel = null;
- private JComboBox _unitsDropDown = null;
- private int _selectedField = -1;
- private char _currentDelimiter = ',';
-
- // previously selected values
- private char _lastUsedDelimiter = ',';
- private int _lastNumFields = -1;
- private Field[] _lastSelectedFields = null;
- private int _lastAltitudeFormat = Altitude.FORMAT_NONE;
-
- // constants
- private static final int SNIPPET_SIZE = 6;
- private static final int MAX_SNIPPET_WIDTH = 80;
- private static final char[] DELIMITERS = {',', '\t', ';', ' '};
-
-
- /**
- * Inner class to listen for delimiter change operations
- */
- private class DelimListener implements ActionListener, DocumentListener
- {
- public void actionPerformed(ActionEvent e)
- {
- informDelimiterSelected();
- }
- public void changedUpdate(DocumentEvent e)
- {
- informDelimiterSelected();
- }
- public void insertUpdate(DocumentEvent e)
- {
- informDelimiterSelected();
- }
- public void removeUpdate(DocumentEvent e)
- {
- informDelimiterSelected();
- }
- }
+ private JFrame _parentFrame;
+ private TextFileLoader _textFileLoader = null;
+ private XmlFileLoader _xmlFileLoader = null;
/**
*/
public FileLoader(App inApp, JFrame inParentFrame)
{
- _app = inApp;
_parentFrame = inParentFrame;
+ _textFileLoader = new TextFileLoader(inApp, inParentFrame);
+ _xmlFileLoader = new XmlFileLoader(inApp, inParentFrame);
}
_fileChooser = new JFileChooser();
if (_fileChooser.showOpenDialog(_parentFrame) == JFileChooser.APPROVE_OPTION)
{
- _file = _fileChooser.getSelectedFile();
- if (preCheckFile(_file))
+ File file = _fileChooser.getSelectedFile();
+ // Check file exists and is readable
+ if (file != null && file.exists() && file.canRead())
{
- _dialog = new JDialog(_parentFrame, I18nManager.getText("dialog.openoptions.title"), true);
- _dialog.setLocationRelativeTo(_parentFrame);
- _dialog.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
- _dialog.getContentPane().add(makeDialogComponents());
-
- // select best separator according to row counts (more is better)
- int bestDelim = getBestOption(_delimiterInfos[0].getNumWinningRecords(),
- _delimiterInfos[1].getNumWinningRecords(), _delimiterInfos[2].getNumWinningRecords(),
- _delimiterInfos[3].getNumWinningRecords());
- if (bestDelim >= 0)
- _delimiterRadios[bestDelim].setSelected(true);
+ // Check file type to see if it's xml or just normal text
+ String fileExtension = file.getName().toLowerCase();
+ if (fileExtension.length() > 4)
+ {fileExtension = fileExtension.substring(fileExtension.length() - 4);}
+ if (fileExtension.equals(".kml") || fileExtension.equals(".gpx")
+ || fileExtension.equals(".xml"))
+ {
+ // Use xml loader for kml, gpx and xml filenames
+ _xmlFileLoader.openFile(file);
+ }
else
- _delimiterRadios[_delimiterRadios.length-1].setSelected(true);
- informDelimiterSelected();
- _dialog.pack();
- _dialog.show();
+ {
+ // Use text loader for everything else
+ _textFileLoader.openFile(file);
+ }
}
else
{
+ // couldn't read file - show error message
JOptionPane.showMessageDialog(_parentFrame, I18nManager.getText("error.load.noread"),
I18nManager.getText("error.load.dialogtitle"), JOptionPane.ERROR_MESSAGE);
}
}
}
-
- /**
- * Check the given file for readability and funny characters,
- * and count the fields for the various separators
- * @param inFile file to check
- */
- private boolean preCheckFile(File inFile)
- {
- // Check file exists and is readable
- if (inFile == null || !inFile.exists() || !inFile.canRead())
- {
- return false;
- }
- // Use a FileCacher to read the file into an array
- _fileCacher = new FileCacher(inFile);
-
- // Check each line of the file
- String[] fileContents = _fileCacher.getContents();
- boolean fileOK = true;
- _delimiterInfos = new DelimiterInfo[5];
- for (int i=0; i<4; i++) _delimiterInfos[i] = new DelimiterInfo(DELIMITERS[i]);
-
- String currLine = null;
- String[] splitFields = null;
- int commaFields = 0, semicolonFields = 0, tabFields = 0, spaceFields = 0;
- for (int lineNum=0; lineNum<fileContents.length && fileOK; lineNum++)
- {
- currLine = fileContents[lineNum];
- // check for invalid characters
- if (currLine.indexOf('\0') >= 0) {fileOK = false;}
- // check for commas
- splitFields = currLine.split(",");
- commaFields = splitFields.length;
- if (commaFields > 1) _delimiterInfos[0].incrementNumRecords();
- _delimiterInfos[0].updateMaxFields(commaFields);
- // check for tabs
- splitFields = currLine.split("\t");
- tabFields = splitFields.length;
- if (tabFields > 1) _delimiterInfos[1].incrementNumRecords();
- _delimiterInfos[1].updateMaxFields(tabFields);
- // check for semicolons
- splitFields = currLine.split(";");
- semicolonFields = splitFields.length;
- if (semicolonFields > 1) _delimiterInfos[2].incrementNumRecords();
- _delimiterInfos[2].updateMaxFields(semicolonFields);
- // check for spaces
- splitFields = currLine.split(" ");
- spaceFields = splitFields.length;
- if (spaceFields > 1) _delimiterInfos[3].incrementNumRecords();
- _delimiterInfos[3].updateMaxFields(spaceFields);
- // increment counters
- int bestScorer = getBestOption(commaFields, tabFields, semicolonFields, spaceFields);
- if (bestScorer >= 0)
- _delimiterInfos[bestScorer].incrementNumWinningRecords();
- }
- return fileOK;
- }
-
-
- /**
- * Get the index of the best one in the list
- * @return the index of the maximum of the four given values
- */
- private static int getBestOption(int inOpt0, int inOpt1, int inOpt2, int inOpt3)
- {
- int bestIndex = -1;
- int maxScore = 1;
- if (inOpt0 > maxScore) {bestIndex = 0; maxScore = inOpt0;}
- if (inOpt1 > maxScore) {bestIndex = 1; maxScore = inOpt1;}
- if (inOpt2 > maxScore) {bestIndex = 2; maxScore = inOpt2;}
- if (inOpt3 > maxScore) {bestIndex = 3; maxScore = inOpt3;}
- return bestIndex;
- }
-
-
- /**
- * Make the components for the open options dialog
- * @return Component for all options
- */
- private Component makeDialogComponents()
- {
- JPanel wholePanel = new JPanel();
- wholePanel.setLayout(new BorderLayout());
-
- // add buttons to south
- JPanel buttonPanel = new JPanel();
- buttonPanel.setLayout(new FlowLayout(FlowLayout.CENTER));
- _backButton = new JButton(I18nManager.getText("button.back"));
- _backButton.addActionListener(new ActionListener() {
- public void actionPerformed(ActionEvent e)
- {
- _layout.previous(_cardPanel);
- _backButton.setEnabled(false);
- _nextButton.setEnabled(true);
- _finishButton.setEnabled(false);
- }
- });
- _backButton.setEnabled(false);
- buttonPanel.add(_backButton);
- _nextButton = new JButton(I18nManager.getText("button.next"));
- _nextButton.addActionListener(new ActionListener() {
- public void actionPerformed(ActionEvent e)
- {
- prepareSecondPanel();
- _layout.next(_cardPanel);
- _nextButton.setEnabled(false);
- _backButton.setEnabled(true);
- _finishButton.setEnabled(true);
- }
- });
- buttonPanel.add(_nextButton);
- _finishButton = new JButton(I18nManager.getText("button.finish"));
- _finishButton.addActionListener(new ActionListener() {
- public void actionPerformed(ActionEvent e)
- {
- finished();
- }
- });
- _finishButton.setEnabled(false);
- buttonPanel.add(_finishButton);
- JButton cancelButton = new JButton(I18nManager.getText("button.cancel"));
- cancelButton.addActionListener(new ActionListener() {
- public void actionPerformed(ActionEvent e)
- {
- _dialog.dispose();
- }
- });
- buttonPanel.add(cancelButton);
- wholePanel.add(buttonPanel, BorderLayout.SOUTH);
-
- // Make the two cards, for delimiter and fields
- _cardPanel = new JPanel();
- _layout = new CardLayout();
- _cardPanel.setLayout(_layout);
- JPanel firstCard = new JPanel();
- firstCard.setLayout(new BorderLayout());
-
- JPanel delimsPanel = new JPanel();
- delimsPanel.setLayout(new GridLayout(0, 2));
- delimsPanel.add(new JLabel(I18nManager.getText("dialog.delimiter.label")));
- delimsPanel.add(new JLabel("")); // blank label to go to next grid row
- // radio buttons
- _delimiterRadios = new JRadioButton[5];
- _delimiterRadios[0] = new JRadioButton(I18nManager.getText("dialog.delimiter.comma"));
- delimsPanel.add(_delimiterRadios[0]);
- _delimiterRadios[1] = new JRadioButton(I18nManager.getText("dialog.delimiter.tab"));
- delimsPanel.add(_delimiterRadios[1]);
- _delimiterRadios[2] = new JRadioButton(I18nManager.getText("dialog.delimiter.semicolon"));
- delimsPanel.add(_delimiterRadios[2]);
- _delimiterRadios[3] = new JRadioButton(I18nManager.getText("dialog.delimiter.space"));
- delimsPanel.add(_delimiterRadios[3]);
- JPanel otherPanel = new JPanel();
- otherPanel.setLayout(new FlowLayout(FlowLayout.LEFT, 0, 0));
- _delimiterRadios[4] = new JRadioButton(I18nManager.getText("dialog.delimiter.other"));
- otherPanel.add(_delimiterRadios[4]);
- _otherDelimiterText = new JTextField(new OneCharDocument(), null, 2);
- otherPanel.add(_otherDelimiterText);
- // Group radio buttons
- ButtonGroup delimGroup = new ButtonGroup();
- DelimListener delimListener = new DelimListener();
- for (int i=0; i<_delimiterRadios.length; i++)
- {
- delimGroup.add(_delimiterRadios[i]);
- _delimiterRadios[i].addActionListener(delimListener);
- }
- _otherDelimiterText.getDocument().addDocumentListener(delimListener);
- delimsPanel.add(new JLabel(""));
- delimsPanel.add(otherPanel);
- _statusLabel = new JLabel("");
- delimsPanel.add(_statusLabel);
- firstCard.add(delimsPanel, BorderLayout.SOUTH);
- // load snippet to show first few lines
- _snippetBox = new JList(_fileCacher.getSnippet(SNIPPET_SIZE, MAX_SNIPPET_WIDTH));
- _snippetBox.setEnabled(false);
- firstCard.add(makeLabelledPanel("dialog.openoptions.filesnippet", _snippetBox), BorderLayout.CENTER);
-
- // Second screen, for field order selection
- JPanel secondCard = new JPanel();
- secondCard.setLayout(new BorderLayout());
- // table for file contents
- _fileExtractTableModel = new FileExtractTableModel();
- JTable extractTable = new JTable(_fileExtractTableModel);
- JScrollPane tableScrollPane = new JScrollPane(extractTable);
- extractTable.setPreferredScrollableViewportSize(new Dimension(350, 80));
- extractTable.getTableHeader().setReorderingAllowed(false);
- secondCard.add(makeLabelledPanel("dialog.openoptions.tabledesc", tableScrollPane), BorderLayout.NORTH);
- JPanel innerPanel2 = new JPanel();
- innerPanel2.setLayout(new BorderLayout());
- _fieldTable = new JTable(new FieldSelectionTableModel());
- _fieldTable.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
- // add listener for selected table row
- _fieldTable.getSelectionModel().addListSelectionListener(
- new ListSelectionListener() {
- public void valueChanged(ListSelectionEvent e) {
- ListSelectionModel lsm = (ListSelectionModel) e.getSource();
- if (lsm.isSelectionEmpty()) {
- //no rows are selected
- selectField(-1);
- } else {
- selectField(lsm.getMinSelectionIndex());
- }
- }
- });
- JPanel tablePanel = new JPanel();
- tablePanel.setLayout(new BorderLayout());
- tablePanel.add(_fieldTable.getTableHeader(), BorderLayout.NORTH);
- tablePanel.add(_fieldTable, BorderLayout.CENTER);
- innerPanel2.add(tablePanel, BorderLayout.CENTER);
-
- JPanel innerPanel3 = new JPanel();
- innerPanel3.setLayout(new BoxLayout(innerPanel3, BoxLayout.Y_AXIS));
- _moveUpButton = new JButton(I18nManager.getText("button.moveup"));
- _moveUpButton.addActionListener(new ActionListener() {
- public void actionPerformed(ActionEvent e)
- {
- int currRow = _fieldTable.getSelectedRow();
- closeTableComboBox(currRow);
- _fieldTableModel.moveUp(currRow);
- _fieldTable.setRowSelectionInterval(currRow-1, currRow-1);
- }
- });
- innerPanel3.add(_moveUpButton);
- _moveDownButton = new JButton(I18nManager.getText("button.movedown"));
- _moveDownButton.addActionListener(new ActionListener() {
- public void actionPerformed(ActionEvent e)
- {
- int currRow = _fieldTable.getSelectedRow();
- closeTableComboBox(currRow);
- _fieldTableModel.moveDown(currRow);
- _fieldTable.setRowSelectionInterval(currRow+1, currRow+1);
- }
- });
- innerPanel3.add(_moveDownButton);
- innerPanel3.add(Box.createVerticalStrut(70));
-
- innerPanel2.add(innerPanel3, BorderLayout.EAST);
- secondCard.add(innerPanel2, BorderLayout.CENTER);
- JPanel altUnitsPanel = new JPanel();
- altUnitsPanel.setLayout(new FlowLayout(FlowLayout.LEFT));
- altUnitsPanel.add(new JLabel(I18nManager.getText("dialog.openoptions.altitudeunits")));
- String[] units = {I18nManager.getText("units.metres"), I18nManager.getText("units.feet")};
- _unitsDropDown = new JComboBox(units);
- altUnitsPanel.add(_unitsDropDown);
- secondCard.add(altUnitsPanel, BorderLayout.SOUTH);
- _cardPanel.add(firstCard, "card1");
- _cardPanel.add(secondCard, "card2");
-
- wholePanel.add(_cardPanel, BorderLayout.CENTER);
- return wholePanel;
- }
-
-
- /**
- * Close the combo box on the selected row of the field table
- * @param inRow currently selected row number
- */
- private void closeTableComboBox(int inRow)
- {
- TableCellEditor editor = _fieldTable.getCellEditor(inRow, 1);
- if (editor != null)
- {
- editor.stopCellEditing();
- }
- }
-
-
- /**
- * change the status based on selection of a delimiter
- */
- protected void informDelimiterSelected()
- {
- for (int i=0; i<(_delimiterRadios.length-1); i++)
- {
- if (_delimiterRadios[i].isSelected())
- {
- int numRecords = _delimiterInfos[i].getNumRecords();
- if (numRecords == 0)
- {
- _statusLabel.setText(I18nManager.getText("dialog.openoptions.deliminfo.norecords"));
- }
- else
- {
- _statusLabel.setText("" + numRecords + " " + I18nManager.getText("dialog.openoptions.deliminfo.records")
- + _delimiterInfos[i].getMaxFields() + " " + I18nManager.getText("dialog.openoptions.deliminfo.fields"));
- }
- }
- }
- if (_delimiterRadios[_delimiterRadios.length-1].isSelected())
- {
- _statusLabel.setText("");
- }
- // enable/disable next button
- _nextButton.setEnabled(_delimiterRadios[4].isSelected() == false
- || _otherDelimiterText.getText().length() == 1);
- }
-
-
- /**
- * Get the delimiter info from the first step
- * @return delimiter information object for the selected delimiter
- */
- public DelimiterInfo getSelectedDelimiterInfo()
- {
- for (int i=0; i<4; i++)
- if (_delimiterRadios[i].isSelected()) return _delimiterInfos[i];
- // must be "other" - build info if necessary
- if (_delimiterInfos[4] == null)
- _delimiterInfos[4] = new DelimiterInfo(_otherDelimiterText.getText().charAt(0));
- return _delimiterInfos[4];
- }
-
-
- /**
- * Use the delimiter selected to determine the fields in the file
- * and prepare the second panel accordingly
- */
- private void prepareSecondPanel()
- {
- DelimiterInfo info = getSelectedDelimiterInfo();
- FileSplitter splitter = new FileSplitter(_fileCacher);
- // Check info makes sense - num fields > 0, num records > 0
- // set "Finished" button to disabled if not ok
- // TODO: Work out if there are header rows or not, save?
- // Try to match header rows with fields
- // Try to match data with fields
- // Add data to GUI elements
- Object[][] tableData = splitter.splitFieldData(info.getDelimiter());
- // possible to ignore blank columns here
- _currentDelimiter = info.getDelimiter();
- _fileExtractTableModel.updateData(tableData);
- _fieldTableModel = new FieldSelectionTableModel();
-
- // Check number of fields and use last ones if count matches
- Field[] startFieldArray = null;
- if (_lastSelectedFields != null && splitter.getNumColumns() == _lastSelectedFields.length)
- startFieldArray = _lastSelectedFields;
- else
- startFieldArray = splitter.makeDefaultFields();
- _fieldTableModel.updateData(startFieldArray);
- _fieldTable.setModel(_fieldTableModel);
- // add dropdowns to second column
- JComboBox fieldTypesBox = new JComboBox();
- for (int i=0; i<Field.ALL_AVAILABLE_FIELDS.length; i++)
- {
- fieldTypesBox.addItem(Field.ALL_AVAILABLE_FIELDS[i].getName());
- }
- _fieldTable.getColumnModel().getColumn(1).setCellEditor(new DefaultCellEditor(fieldTypesBox));
-
- // Set altitude format to same as last time if available
- if (_lastAltitudeFormat == Altitude.FORMAT_METRES)
- _unitsDropDown.setSelectedIndex(0);
- else if (_lastAltitudeFormat == Altitude.FORMAT_FEET)
- _unitsDropDown.setSelectedIndex(1);
- // no selection on field list
- selectField(-1);
- }
-
-
- /**
- * All options have been selected, so load file
- */
- private void finished()
- {
- // Save delimiter, field array and altitude format for later use
- _lastUsedDelimiter = _currentDelimiter;
- _lastSelectedFields = _fieldTableModel.getFieldArray();
- int altitudeFormat = Altitude.FORMAT_METRES;
- if (_unitsDropDown.getSelectedIndex() == 1)
- {
- altitudeFormat = Altitude.FORMAT_FEET;
- }
- _lastAltitudeFormat = altitudeFormat;
- // give data to App
- _app.informDataLoaded(_fieldTableModel.getFieldArray(),
- _fileExtractTableModel.getData(), altitudeFormat,
- _file.getName());
- // clear up file cacher
- _fileCacher.clear();
- // dispose of dialog
- _dialog.dispose();
- }
-
-
- /**
- * Make a panel with a label and a component
- * @param inLabelKey label key to use
- * @param inComponent component for main area of panel
- * @return labelled Panel
- */
- private static JPanel makeLabelledPanel(String inLabelKey, JComponent inComponent)
- {
- JPanel panel = new JPanel();
- panel.setLayout(new BorderLayout());
- panel.add(new JLabel(I18nManager.getText(inLabelKey)), BorderLayout.NORTH);
- panel.add(inComponent, BorderLayout.CENTER);
- return panel;
- }
-
-
- /**
- * An entry in the field list has been selected
- * @param inFieldNum index of field, starting with 0
- */
- private void selectField(int inFieldNum)
- {
- if (inFieldNum == -1 || inFieldNum != _selectedField)
- {
- _selectedField = inFieldNum;
- _moveUpButton.setEnabled(inFieldNum > 0);
- _moveDownButton.setEnabled(inFieldNum >= 0
- && inFieldNum < (_fieldTableModel.getRowCount()-1));
- }
- }
-
-
/**
- * @return the last delimiter character used for a load
+ * @return the last delimiter character used for a text file load
*/
public char getLastUsedDelimiter()
{
- return _lastUsedDelimiter;
+ return _textFileLoader.getLastUsedDelimiter();
}
}
projects / GpsPrune.git / blobdiff